[Freeswitch-users] Audio Connection Delay with SCA

[Sean Devoy]

Anthony,
Thanks for the reply.

We use all CSICO SPA504G phones.
I did have the jitter buffer set up "HIGH" (choices: Low, Med, High, Very
High, Extremely High).  I dropped them down to Low now for testing.  They do
have pretty good network speeds (business level cable modem).

There is also something labeled:  " Jitter Buffer Adjustment:  "  Choices
(Up, Down, Both, Disabled).  I have both.

However, the issue is present, but far less pronounced in non-shared lines.
They have always said there was a connection delay at this site, but with
SCA it seems to be compounded.

Maybe Group Call Pick will work better for them, they are all in the area.

Sean

-----Original Message-----
From: freeswitch-users-bounces at lists.freeswitch.org
[mailto:freeswitch-users-bounces at lists.freeswitch.org] On Behalf Of Anthony
Minessale
Sent: Friday, June 08, 2012 3:28 PM
To: FreeSWITCH Users Help
Subject: Re: [Freeswitch-users] Audio Connection Delay with SCA

what type of phone?  If it has a jitter buffer, you can try reducing or
disabling it.
its probably a combo of jitter buffers charging up on the phone, and the
auto-ajust trying to fix the broken sdp for NAT.


On Fri, Jun 8, 2012 at 12:12 PM, Sean Devoy <sdevoy at bizfocused.com> wrote:
> Hi,
>
>
>
> I finally got Shared Call Appearance working to 4 NAT connected
phones!!!!!
>
>
>
> Now the users say when they answer that line, they must wait a second 
> or so to start talking (no big deal), but they all claim it takes 
> nearly 5 seconds to be able to hear the caller.  They answer the 
> standard “Thank You for calling XYZ, how can I help you today” which 
> the caller DOES HEAR, but they cannot hear his response for the first 
> 5 seconds and ALWAYS have to ask them to repeat it.
>
>
>
> In the logs, I see what I believe is them picking up extension 299:
>
>     2012-06-08 11:44:15.115249 [NOTICE] switch_channel.c:926 New 
> Channel
> sofia/external/sip:299 at 69.251.170.6:5063 

>
> And then the RPT finally connecting:
>
>    2012-06-08 11:44:20.665094 [DEBUG] sofia_glue.c:3248 AUDIO RTP 
> [sofia/external/sip:299 at 69.251.170.6:5064] 10.10.40.185 port 23500 ->
> 69.251.170.6 port 16498 codec: 0 ms: 20
>
>
>
> Note the 5.5 second delay!  Granted there are 100+ lines between those 
> if you want to see them, I will post them.
>
> After that audio is fine.
>
>
>
> Any thoughts would be appreciated.
>
> Sean
>
>
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--
Anthony Minessale II

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